JPS6342606Y2 - - Google Patents

Info

Publication number
JPS6342606Y2
JPS6342606Y2 JP20220782U JP20220782U JPS6342606Y2 JP S6342606 Y2 JPS6342606 Y2 JP S6342606Y2 JP 20220782 U JP20220782 U JP 20220782U JP 20220782 U JP20220782 U JP 20220782U JP S6342606 Y2 JPS6342606 Y2 JP S6342606Y2
Authority
JP
Japan
Prior art keywords
contact
response monitoring
relay
diode
ans
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
JP20220782U
Other languages
English (en)
Japanese (ja)
Other versions
JPS59104661U (ja
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP20220782U priority Critical patent/JPS59104661U/ja
Publication of JPS59104661U publication Critical patent/JPS59104661U/ja
Application granted granted Critical
Publication of JPS6342606Y2 publication Critical patent/JPS6342606Y2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Prepayment Telephone Systems (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
JP20220782U 1982-12-28 1982-12-28 公衆電話機の被呼者応答監視装置 Granted JPS59104661U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20220782U JPS59104661U (ja) 1982-12-28 1982-12-28 公衆電話機の被呼者応答監視装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20220782U JPS59104661U (ja) 1982-12-28 1982-12-28 公衆電話機の被呼者応答監視装置

Publications (2)

Publication Number Publication Date
JPS59104661U JPS59104661U (ja) 1984-07-14
JPS6342606Y2 true JPS6342606Y2 (cs) 1988-11-08

Family

ID=30427685

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20220782U Granted JPS59104661U (ja) 1982-12-28 1982-12-28 公衆電話機の被呼者応答監視装置

Country Status (1)

Country Link
JP (1) JPS59104661U (cs)

Also Published As

Publication number Publication date
JPS59104661U (ja) 1984-07-14

Similar Documents

Publication Publication Date Title
US5157712A (en) Telephone nuisance call mitigation screening device
JPS6277727A (ja) コ−ドレス電話機用回線切替回路
US4866754A (en) Automatic telephone answering machine utilizing voice synthesis
US4219700A (en) Partyline subscriber interface circuit
JPS61171262A (ja) 予め決められた呼出信号で動作する付加装置
JPS6342606Y2 (cs)
US3946146A (en) Discrete ringing detector for use in key telephone systems
US4095056A (en) Toll restrictor access circuit
CA1079429A (en) Dial pulse key telephone intercom system
JPS6328385B2 (cs)
JPH0246141Y2 (cs)
JPS6325793Y2 (cs)
CA1116329A (en) Loop, dial pulse and ring trip detection circuit
JPS6312608Y2 (cs)
JP2840116B2 (ja) ダイヤルイン着呼受信装置
JPH0314859Y2 (cs)
JP2524882B2 (ja) 通信管理装置
JPS6358420B2 (cs)
JPS6325792Y2 (cs)
JPS5855702Y2 (ja) 発呼検出装置
JP2619664B2 (ja) 電話機付属機器のオフフック検出方法
JPS6318205Y2 (cs)
JP2507021B2 (ja) 電話装置
JPS6143051A (ja) 電話機回路
JPS6019699B2 (ja) 自動呼出回路